-- SELECT AVG(TOTAL_VALUE) AS SA_MEDIAN
SELECT ROUND(AVG(TOTAL_VALUE)) AS SA_MEDIAN
FROM (SELECT TOTAL_VALUE
      FROM CONVENIENCE WHERE SURVEY_YEAR = 2019 AND KIND_CODE = '100'
      ORDER BY TOTAL_VALUE ASC
      LIMIT 2 - (SELECT COUNT(*) FROM CONVENIENCE WHERE SURVEY_YEAR = 2019 AND KIND_CODE = '100') % 2
      OFFSET (SELECT (COUNT(*) - 1) / 2 FROM CONVENIENCE WHERE SURVEY_YEAR = 2019 AND KIND_CODE = '100'));